| abstract |
Organometallic compounds, organic light-emitting devices, and lighting devices employing the same are provided. The organometallic compound has a chemical structure represented by formula (I) or (II): n n n n n n n n n n n n wherein n is 1 or 2; each R 1 is independent and can be hydrogen, C 1-8 alkyl, C 1-8 alkoxy, C 5-10 aryl, or C 2-8 heteroaryl; each R 2 is independent and can be hydrogen, C 1-8 fluoroalkyl, or C 1-8 alkyl; A is N, or CH; B is N, or CH; D is N, or C—R 3 , wherein R 3 is H, or C 1-8 alkyl; and R 1 is not hydrogen when R 2 is hydrogen. |